13th Edition (1926, 32 vols.): $200—350
14th Edition (1929, 24 vols.): $250—400
15th Edition (1974, 30 vols.): $200—300
2007 Ultimate Reference Suite DVD 16th edition (2007): $100—200
2010 Ultimate Britannica DVD collection (2010, 14th-2009 editions): $200—350
Britannica Academic (Current Version): $350—400